Oil-burner.



A. D. LEE.

OIL BURNER. APPLICATION PILEID 41101.15

Patented Nov. 10, 1908.

iiiwvvv 1 M 4& lla? 2 f w W M n ALVA D. LEE, OF BROOKLINE,MASSACHUSETTS.

OIL-BURNER.

Specification of Letters Patent.

Patented Nov. 10, 1908.

Application filed August 15, 1907. Serial No. 388,623.

To all whom 'it may concern:

Be it known that I, ALVA D. LEE, a citizen of the United States ofAmerica, and a resident of Brookline, in the county of Norfolk and Stateof Massachusetts, have invented certain new and useful Improvements inof such a device in which the discharge of oil, steam, or air intothe-mixing chamber may be nicely regulated so that the. mixture of theseingredients may be of any desired proportion. I

The invention consists of a-casing having adjustably mounted therein aplurality of tubular members, the discharge outlets of which-are. inaxial alinement with the discharge outlet in said-casing, while the discharge orifice of the'interior member is controlled by a suitable needlevalve, which needle valve and each of the tubular members are providedon their periphery with a plurality of spiral grooves adapted to actupon the ingredients passin through the annular spaces between saidmembers to cause them to be spirally discharged into said mixing chamberin order that an effectual mixture of the ingredients be accomplishedprior to their ignition.

The invention consists further in certain novel features of constructionand arrange-- ment of parts which will be readily understood byreference to thedescription of'the drawings and to the claimshereinafter given.

Of the drawings: Figure 1 represents a vertical section of a burnerembodying the features of this invention. Fig. 2 represents a rear endview of the same. Figs. 3, 4., and '5 represent vertical transversesections on lines 3.-3, 44=', and 55, respectively, on Fig. 1, and Figs.6 and 7 represent elevations of the inner ends of the tubular memberswithin the burner casing.

Similar characters designate like arts throughout the several figures ofthe rawings.

In the drawings, 10 represents a suitable casing the interior chamber 11thereof communicating with an air inlet pipe 12 through which compressedair may be admitted to said chamber 11 from any suitable source ofsupply. Threaded to the interior of the casing 10 is a tubular member 13provided with an annular groove 14 in its periphery which communicateswith a steam inlet pipe 15 through which steam from any suitable sourceof supply may be admitted to said annular groove 14 and pass through theopenings 16 into the interior chamber 17 of said tubular member. In asimilar manner is mounted another'tubular member 18 rovided with anannular groove 19 in its perlphery between which and the interiorchamber 20 of said tubular member area plurality of openings 21 while inthesame plane with said annular groove is an annular peripheral groove22in the outer tubular mem-- ber 13 communicating with the annulargroove 19 by a plurality of openings 23 extending through said outertubular member 13.

The annular groove 23 communicates with an oil pipe 24: through whichoil under pressure from any suitable source of supply may be admittedthrough the annular grooves 22, openings 23, annular grooves 19,openings "flar member 18 is a suitable needle valve 25 which is threadedat 26 to said tubular mem ber 18 so that it may be adjusted by means ofthe handle 27 longitudinally thereof to control the discharge ofoil=from the chamber inner tubular member 18. The tubular'member 13 isprovided at its inner endwith a contracted mouth 29 having a dischargeorifice 30 while the inner end of the'cas1ng-10 is provided with acontracted mouth 31having a discharge orifice 32. n

' The exterior of the inner end of the casing 10 is threaded at 33, saidthreaded portion 33 being screwed into the wall 34 of any receptaclein'which it is desired to use said tion 33 is a member 35 provided witha dis charge orifice 36 between which and the discharge orifices 28, 30,and 32 is'a mixing chamber 37 into which the air from the and the 'oil'from the chamber- 20, are disfinal discharge through the outlet 36' atwhich point the mixture is ignited 21, to the interior chamber 20 of theinnertubular member 18. Within the inner tubu-- 20 through the dischargeorifice 28 of said charged and thoroughly inixedbefore their burner.Mounted upon said threaded porchamber 11, the steam from the chamber 17,

The chambers 11, 17, and 20 are annular 40 extending longitudinally ofthe periphery 'of the handle l3.

of said tubular member said grooves having a righthand twist. In asimilar manner the per1phery of the inner tubular member 18 is providedwith a plurality of s iral grooves 41 extending longitudinally o theperiphcry of said tubular member 18, said spiral grooves having alefthand twist. The needle valve 25 within the inner tubular member islikewise provided with a plurality of annular grooves 42- extendinglongitudinally of the periphery thereof, said grooves having a righthandtwist. The effect-ofthese grooves extending spirally, alternately inopposite directions is to cause the ingredients passing through thechambers 11, 17, and 20 to move in a torsional path in oppositedirections so that when discharged into the mixing chamber 37 they willcross each others path and cause them to be atomized and united in agaseous mixture which will pass from the discharge orifice 36 insuitable condition to secure the best results when ignited.

The mouths 31 and 29 of the casing 10 and tubular member 13 aregradually increased in" thickness toward the discharge orifices 32 and30 so that the annular chambers between the casing 10 and the exteriorof the outer tubular members 13 and the inner wall of said member 13 andthe exterior of the inner tubular member 18 are gradually diminished sothat the ingredients passing through these chambers under pressure passthrough the discharge orifices 30 and 32 under increased velocity owingto the diminished outlet from said chambers.

All of the discharge outlets 28, 30, 32, and 36 are in axial alinementand the discharge through the outlets 28, 30, and 32 may be regulated byan adjustment of the needle valve 25 and the tubular members 18 and 13.The tubular member 18 is threaded to the interior of the tubular member13 and is adj ustable longitudinally thereof by means In a like mannerthe tubular member 13 is threaded to the interior of the casing 10 andis adjustable longitudinally thereof by means of the handlee t. Theouter end of the casing 10 is provided with an annular depression 45 inwhich is mounted an annular ring 46 of asbestos or other non-conductorof heat, said rlng being compressed into said depression 45 and againstthe threaded portion of the tubular member 13 by means of a nut 47operated in any well-known manner. This prevents any leakage between thecasing 10 and the tubular member 13. In a similar manner the rear end ofthe tubular member 13 is provided with a suitable annular depression inwhich is mounted a similar annular ring 48 of asbestos or similarmaterial which is controlled in like manner by means of a nut 49. Theinner tubular member 18 is also provided with a ring 50 of asbestos, orother non-conducting material pressed into a depression in the rear endthereof by means of the nut 51, these packing rings 48 and 50 preventinga leakage between the outer tubular member 13 and the inner tubularmember 18 and the inner tubular member 18 and the threaded portion 26 ofthe needle valve. By means of such a construction as is herein shown thevarious ingredients to provide a suitable mixture for igniti on may beadmitted separately into annular chambers in axial alinement and havetheir velocity increased by being forced through narrowing aperturesfromwhich they are deflected in such a manner as to impinge upon thewalls of the mixing chamber into which they are'discharged while thegrooves upon the peripheries of the various interior members act uponsaid ingredients in such EL manner as to cause them to move in a spiralpath in opposite directions thus causing the ingredients upon dischargefrom their separate chambers to cross each others path and effect a mosteffective mixture thereof before final discharge from the mixing chamber37.

It is believed that from the foregoing the operation and advantages of aconstruction such as is herein shown will be fully apparent without anyfurther description.

Having thus described my invention, I claim:

1. In an oil burner, the combination of a casing provided with aplurality of inlets and a single outlet; of a plurality of tubularmembers adjustable longitudinally relative to each other within saidcasing provided with discharge outlets in alinement with the dischargeoutlet in said casing and having a plurality of spiral'grooves extendinglongitudinally of the peripheral walls thereof; and an inlet to theinterior of each of said tubular members communicating with one of saidcasing inlets.

2. In an 011 burner, the combination of a casing provided with aplurality of inlets and a single outlet; of a plurality of tubularmembers adjustable longitudinally relative to each other within saldcasing provided with discharge outlets in alinement with the dischargeoutlet in said casing and having a plurality of" spiral groovesextending longitudinally of the peripheral Walls thereof;

an inlet to the interior of eachof said' tubular members communicatingwith one of said casing inlets; and a needle valve for closing thedischarge outlet of the inner tubular member provided with a pluralityof spiral grooves extending longitudinally thereof.

3. In an oil burner;"the combination of a casing having a suitable inletand discharge outlet; a plurality of tubular members within said casingeach provided with a suitable -inlet and discharge outlet, all of saidoutlets being in alinement with the discharge outlet from said casing,said casing having an inlet to the interior of each of said tubularmembers; anda member secured to the end of said casing provided with amixing chamber into which the contents of said casing and tubularmembers are adapted to be discharged against the inner walls thereof.

4. In an oil burner, the combination of a casing having a suitable inletand discharge outlet; a plurality of tubular members within said casingeach provided with a suitable inlet and discharge outlet, all of saidoutlets being in alinement with the discharge outlet from said casing,said casing having an inlet I to the interior of each of said tubularmenibers; a needle valvefor closing the discharge outlet for theinterior tubular member; and a member secured to the end of said casing1 provided with amixing chamber into which the contents ofsaidcasing-and tubular members are adapted to be discharged against theinner walls thereof.

5. In an oil burner; the combination of a casing provided with aplurality of inlets and a single outlet; of a plurality of tubularmembers within said casing adjustable longitudinally' thereof and toeach other having the grooves of each member extending in a diflerentdirection to those of the member surrounding it; an inlet to each ofsaid tubular members communicating with one of said casing inlets; andmeans interposed between each tubular member and the member within.

it separating the contents thereof until ejected from the dischargeorifices.

Signed by me at Boston, Mass, this 20th day of June, 1907.

ALVA D. LEE. Witnesses: v

EDNA C; CLEVELAND, NATHAN C. LOMBARD. A

